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zulip/zerver/lib/push_notifications.py

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import base64
import binascii
import logging
import lxml.html
import re
import time
from typing import Any, Dict, List, Optional, Tuple, TYPE_CHECKING, Union
from django.conf import settings
from django.db import IntegrityError, transaction
from django.db.models import F
from django.utils.timezone import now as timezone_now
from django.utils.translation import ugettext as _
import gcm
import ujson
from zerver.decorator import statsd_increment
from zerver.lib.avatar import absolute_avatar_url
from zerver.lib.exceptions import JsonableError
from zerver.lib.message import access_message, \
bulk_access_messages_expect_usermessage, huddle_users
from zerver.lib.remote_server import send_to_push_bouncer, send_json_to_push_bouncer
from zerver.lib.timestamp import datetime_to_timestamp
from zerver.models import PushDeviceToken, Message, Recipient, \
UserMessage, UserProfile, \
get_display_recipient, receives_offline_push_notifications, \
receives_online_notifications, get_user_profile_by_id, \
ArchivedMessage
if TYPE_CHECKING:
from apns2.client import APNsClient
logger = logging.getLogger(__name__)
if settings.ZILENCER_ENABLED:
from zilencer.models import RemotePushDeviceToken
else: # nocoverage -- Not convenient to add test for this.
from mock import Mock
RemotePushDeviceToken = Mock() # type: ignore[misc] # https://github.com/JukkaL/mypy/issues/1188
DeviceToken = Union[PushDeviceToken, RemotePushDeviceToken]
# We store the token as b64, but apns-client wants hex strings
def b64_to_hex(data: str) -> str:
return binascii.hexlify(base64.b64decode(data)).decode('utf-8')
def hex_to_b64(data: str) -> str:
return base64.b64encode(binascii.unhexlify(data)).decode()
#
# Sending to APNs, for iOS
#
_apns_client: Optional["APNsClient"] = None
_apns_client_initialized = False
def get_apns_client() -> 'Optional[APNsClient]':
# We lazily do this import as part of optimizing Zulip's base
# import time.
from apns2.client import APNsClient
global _apns_client, _apns_client_initialized
if not _apns_client_initialized:
# NB if called concurrently, this will make excess connections.
# That's a little sloppy, but harmless unless a server gets
# hammered with a ton of these all at once after startup.
if settings.APNS_CERT_FILE is not None:
_apns_client = APNsClient(credentials=settings.APNS_CERT_FILE,
use_sandbox=settings.APNS_SANDBOX)
_apns_client_initialized = True
return _apns_client
def apns_enabled() -> bool:
client = get_apns_client()
return client is not None
def modernize_apns_payload(data: Dict[str, Any]) -> Dict[str, Any]:
'''Take a payload in an unknown Zulip version's format, and return in current format.'''
# TODO this isn't super robust as is -- if a buggy remote server
# sends a malformed payload, we are likely to raise an exception.
if 'message_ids' in data:
# The format sent by 1.6.0, from the earliest pre-1.6.0
# version with bouncer support up until 613d093d7 pre-1.7.0:
# 'alert': str, # just sender, and text about PM/group-PM/mention
# 'message_ids': List[int], # always just one
return {
'alert': data['alert'],
'badge': 0,
'custom': {
'zulip': {
'message_ids': data['message_ids'],
},
},
}
else:
# Something already compatible with the current format.
# `alert` may be a string, or a dict with `title` and `body`.
# In 1.7.0 and 1.7.1, before 0912b5ba8 pre-1.8.0, the only
# item in `custom.zulip` is `message_ids`.
return data
APNS_MAX_RETRIES = 3
@statsd_increment("apple_push_notification")
def send_apple_push_notification(user_id: int, devices: List[DeviceToken],
payload_data: Dict[str, Any], remote: bool=False) -> None:
# We lazily do the APNS imports as part of optimizing Zulip's base
# import time; since these are only needed in the push
# notification queue worker, it's best to only import them in the
# code that needs them.
from apns2.payload import Payload as APNsPayload
from hyper.http20.exceptions import HTTP20Error
client = get_apns_client()
if client is None:
logger.debug("APNs: Dropping a notification because nothing configured. "
"Set PUSH_NOTIFICATION_BOUNCER_URL (or APNS_CERT_FILE).")
return
if remote:
DeviceTokenClass = RemotePushDeviceToken
else:
DeviceTokenClass = PushDeviceToken
logger.info("APNs: Sending notification for user %d to %d devices",
user_id, len(devices))
payload = APNsPayload(**modernize_apns_payload(payload_data))
expiration = int(time.time() + 24 * 3600)
retries_left = APNS_MAX_RETRIES
for device in devices:
# TODO obviously this should be made to actually use the async
def attempt_send() -> Optional[str]:
try:
stream_id = client.send_notification_async(
device.token, payload, topic=settings.APNS_TOPIC,
expiration=expiration)
return client.get_notification_result(stream_id)
except HTTP20Error as e:
logger.warning("APNs: HTTP error sending for user %d to device %s: %s",
user_id, device.token, e.__class__.__name__)
return None
except BrokenPipeError as e:
logger.warning("APNs: BrokenPipeError sending for user %d to device %s: %s",
user_id, device.token, e.__class__.__name__)
return None
except ConnectionError as e: # nocoverage
logger.warning("APNs: ConnectionError sending for user %d to device %s: %s",
user_id, device.token, e.__class__.__name__)
return None
result = attempt_send()
while result is None and retries_left > 0:
retries_left -= 1
result = attempt_send()
if result is None:
result = "HTTP error, retries exhausted"
if result[0] == "Unregistered":
# For some reason, "Unregistered" result values have a
# different format, as a tuple of the pair ("Unregistered", 12345132131).
result = result[0]
if result == 'Success':
logger.info("APNs: Success sending for user %d to device %s",
user_id, device.token)
elif result in ["Unregistered", "BadDeviceToken", "DeviceTokenNotForTopic"]:
logger.info("APNs: Removing invalid/expired token %s (%s)" % (device.token, result))
# We remove all entries for this token (There
# could be multiple for different Zulip servers).
DeviceTokenClass.objects.filter(token=device.token, kind=DeviceTokenClass.APNS).delete()
else:
logger.warning("APNs: Failed to send for user %d to device %s: %s",
user_id, device.token, result)
#
# Sending to GCM, for Android
#
def make_gcm_client() -> gcm.GCM: # nocoverage
# From GCM upstream's doc for migrating to FCM:
#
# FCM supports HTTP and XMPP protocols that are virtually
# identical to the GCM server protocols, so you don't need to
# update your sending logic for the migration.
#
# https://developers.google.com/cloud-messaging/android/android-migrate-fcm
#
# The one thing we're required to change on the server is the URL of
# the endpoint. So we get to keep using the GCM client library we've
# been using (as long as we're happy with it) -- just monkey-patch in
# that one change, because the library's API doesn't anticipate that
# as a customization point.
gcm.gcm.GCM_URL = 'https://fcm.googleapis.com/fcm/send'
return gcm.GCM(settings.ANDROID_GCM_API_KEY)
if settings.ANDROID_GCM_API_KEY: # nocoverage
gcm_client = make_gcm_client()
else:
gcm_client = None
def gcm_enabled() -> bool: # nocoverage
return gcm_client is not None
def send_android_push_notification_to_user(user_profile: UserProfile, data: Dict[str, Any],
options: Dict[str, Any]) -> None:
devices = list(PushDeviceToken.objects.filter(user=user_profile,
kind=PushDeviceToken.GCM))
send_android_push_notification(devices, data, options)
def parse_gcm_options(options: Dict[str, Any], data: Dict[str, Any]) -> str:
"""
Parse GCM options, supplying defaults, and raising an error if invalid.
The options permitted here form part of the Zulip notification
bouncer's API. They are:
`priority`: Passed through to GCM; see upstream doc linked below.
Zulip servers should always set this; when unset, we guess a value
based on the behavior of old server versions.
Including unrecognized options is an error.
For details on options' semantics, see this GCM upstream doc:
https://firebase.google.com/docs/cloud-messaging/http-server-ref
Returns `priority`.
"""
priority = options.pop('priority', None)
if priority is None:
# An older server. Identify if this seems to be an actual notification.
if data.get('event') == 'message':
priority = 'high'
else: # `'event': 'remove'`, presumably
priority = 'normal'
if priority not in ('normal', 'high'):
raise JsonableError(_("Invalid GCM option to bouncer: priority %r")
% (priority,))
if options:
# We're strict about the API; there is no use case for a newer Zulip
# server talking to an older bouncer, so we only need to provide
# one-way compatibility.
raise JsonableError(_("Invalid GCM options to bouncer: %s")
% (ujson.dumps(options),))
return priority # when this grows a second option, can make it a tuple
@statsd_increment("android_push_notification")
def send_android_push_notification(devices: List[DeviceToken], data: Dict[str, Any],
options: Dict[str, Any], remote: bool=False) -> None:
"""
Send a GCM message to the given devices.
See https://firebase.google.com/docs/cloud-messaging/http-server-ref
for the GCM upstream API which this talks to.
data: The JSON object (decoded) to send as the 'data' parameter of
the GCM message.
options: Additional options to control the GCM message sent.
For details, see `parse_gcm_options`.
"""
if not gcm_client:
logger.debug("Skipping sending a GCM push notification since "
"PUSH_NOTIFICATION_BOUNCER_URL and ANDROID_GCM_API_KEY are both unset")
return
reg_ids = [device.token for device in devices]
priority = parse_gcm_options(options, data)
try:
# See https://firebase.google.com/docs/cloud-messaging/http-server-ref .
# Two kwargs `retries` and `session` get eaten by `json_request`;
# the rest pass through to the GCM server.
res = gcm_client.json_request(registration_ids=reg_ids,
priority=priority,
data=data,
retries=10)
except OSError as e:
logger.warning(str(e))
return
if res and 'success' in res:
for reg_id, msg_id in res['success'].items():
logger.info("GCM: Sent %s as %s" % (reg_id, msg_id))
if remote:
DeviceTokenClass = RemotePushDeviceToken
else:
DeviceTokenClass = PushDeviceToken
# res.canonical will contain results when there are duplicate registrations for the same
# device. The "canonical" registration is the latest registration made by the device.
# Ref: https://developer.android.com/google/gcm/adv.html#canonical
if 'canonical' in res:
for reg_id, new_reg_id in res['canonical'].items():
if reg_id == new_reg_id:
# I'm not sure if this should happen. In any case, not really actionable.
logger.warning("GCM: Got canonical ref but it already matches our ID %s!" % (reg_id,))
elif not DeviceTokenClass.objects.filter(token=new_reg_id,
kind=DeviceTokenClass.GCM).count():
# This case shouldn't happen; any time we get a canonical ref it should have been
# previously registered in our system.
#
# That said, recovery is easy: just update the current PDT object to use the new ID.
logger.warning(
"GCM: Got canonical ref %s replacing %s but new ID not registered! Updating." %
(new_reg_id, reg_id))
DeviceTokenClass.objects.filter(
token=reg_id, kind=DeviceTokenClass.GCM).update(token=new_reg_id)
else:
# Since we know the new ID is registered in our system we can just drop the old one.
logger.info("GCM: Got canonical ref %s, dropping %s" % (new_reg_id, reg_id))
DeviceTokenClass.objects.filter(token=reg_id, kind=DeviceTokenClass.GCM).delete()
if 'errors' in res:
for error, reg_ids in res['errors'].items():
if error in ['NotRegistered', 'InvalidRegistration']:
for reg_id in reg_ids:
logger.info("GCM: Removing %s" % (reg_id,))
# We remove all entries for this token (There
# could be multiple for different Zulip servers).
DeviceTokenClass.objects.filter(token=reg_id, kind=DeviceTokenClass.GCM).delete()
else:
for reg_id in reg_ids:
logger.warning("GCM: Delivery to %s failed: %s" % (reg_id, error))
# python-gcm handles retrying of the unsent messages.
# Ref: https://github.com/geeknam/python-gcm/blob/master/gcm/gcm.py#L497
#
# Sending to a bouncer
#
def uses_notification_bouncer() -> bool:
return settings.PUSH_NOTIFICATION_BOUNCER_URL is not None
def send_notifications_to_bouncer(user_profile_id: int,
apns_payload: Dict[str, Any],
gcm_payload: Dict[str, Any],
gcm_options: Dict[str, Any]) -> None:
post_data = {
'user_id': user_profile_id,
'apns_payload': apns_payload,
'gcm_payload': gcm_payload,
'gcm_options': gcm_options,
}
# Calls zilencer.views.remote_server_notify_push
send_json_to_push_bouncer('POST', 'push/notify', post_data)
#
# Managing device tokens
#
def num_push_devices_for_user(user_profile: UserProfile, kind: Optional[int]=None) -> PushDeviceToken:
if kind is None:
return PushDeviceToken.objects.filter(user=user_profile).count()
else:
return PushDeviceToken.objects.filter(user=user_profile, kind=kind).count()
def add_push_device_token(user_profile: UserProfile,
token_str: str,
kind: int,
ios_app_id: Optional[str]=None) -> None:
logger.info("Registering push device: %d %r %d %r",
user_profile.id, token_str, kind, ios_app_id)
# If we're sending things to the push notification bouncer
# register this user with them here
if uses_notification_bouncer():
post_data = {
'server_uuid': settings.ZULIP_ORG_ID,
'user_id': user_profile.id,
'token': token_str,
'token_kind': kind,
}
if kind == PushDeviceToken.APNS:
post_data['ios_app_id'] = ios_app_id
logger.info("Sending new push device to bouncer: %r", post_data)
# Calls zilencer.views.register_remote_push_device
send_to_push_bouncer('POST', 'push/register', post_data)
return
try:
with transaction.atomic():
PushDeviceToken.objects.create(
user_id=user_profile.id,
kind=kind,
token=token_str,
ios_app_id=ios_app_id,
# last_updated is to be renamed to date_created.
last_updated=timezone_now())
except IntegrityError:
pass
def remove_push_device_token(user_profile: UserProfile, token_str: str, kind: int) -> None:
# If we're sending things to the push notification bouncer
# unregister this user with them here
if uses_notification_bouncer():
# TODO: Make this a remove item
post_data = {
'server_uuid': settings.ZULIP_ORG_ID,
'user_id': user_profile.id,
'token': token_str,
'token_kind': kind,
}
# Calls zilencer.views.unregister_remote_push_device
send_to_push_bouncer("POST", "push/unregister", post_data)
return
try:
token = PushDeviceToken.objects.get(token=token_str, kind=kind, user=user_profile)
token.delete()
except PushDeviceToken.DoesNotExist:
raise JsonableError(_("Token does not exist"))
def clear_push_device_tokens(user_profile_id: int) -> None:
# Deletes all of a user's PushDeviceTokens.
if uses_notification_bouncer():
post_data = {
'server_uuid': settings.ZULIP_ORG_ID,
'user_id': user_profile_id,
}
send_to_push_bouncer("POST", "push/unregister/all", post_data)
return
PushDeviceToken.objects.filter(user_id=user_profile_id).delete()
#
# Push notifications in general
#
def push_notifications_enabled() -> bool:
'''True just if this server has configured a way to send push notifications.'''
if (uses_notification_bouncer()
and settings.ZULIP_ORG_KEY is not None
and settings.ZULIP_ORG_ID is not None): # nocoverage
# We have the needed configuration to send push notifications through
# the bouncer. Better yet would be to confirm that this config actually
# works -- e.g., that we have ever successfully sent to the bouncer --
# but this is a good start.
return True
if settings.DEVELOPMENT and (apns_enabled() or gcm_enabled()): # nocoverage
# Since much of the notifications logic is platform-specific, the mobile
# developers often work on just one platform at a time, so we should
# only require one to be configured.
return True
elif apns_enabled() and gcm_enabled(): # nocoverage
# We have the needed configuration to send through APNs and GCM directly
# (i.e., we are the bouncer, presumably.) Again, assume it actually works.
return True
return False
def initialize_push_notifications() -> None:
if not push_notifications_enabled():
if settings.DEVELOPMENT and not settings.TEST_SUITE: # nocoverage
# Avoid unnecessary spam on development environment startup
return
logger.warning("Mobile push notifications are not configured.\n "
"See https://zulip.readthedocs.io/en/latest/"
"production/mobile-push-notifications.html")
def get_gcm_alert(message: Message) -> str:
"""
Determine what alert string to display based on the missed messages.
"""
sender_str = message.sender.full_name
if message.recipient.type == Recipient.HUDDLE and message.trigger == 'private_message':
return "New private group message from %s" % (sender_str,)
elif message.recipient.type == Recipient.PERSONAL and message.trigger == 'private_message':
return "New private message from %s" % (sender_str,)
elif message.is_stream_message() and (message.trigger == 'mentioned' or
message.trigger == 'wildcard_mentioned'):
return "New mention from %s" % (sender_str,)
else: # message.is_stream_message() and message.trigger == 'stream_push_notify'
return "New stream message from %s in %s" % (sender_str, get_display_recipient(message.recipient),)
def get_mobile_push_content(rendered_content: str) -> str:
def get_text(elem: lxml.html.HtmlElement) -> str:
# Convert default emojis to their unicode equivalent.
classes = elem.get("class", "")
if "emoji" in classes:
match = re.search(r"emoji-(?P<emoji_code>\S+)", classes)
if match:
emoji_code = match.group('emoji_code')
char_repr = ""
for codepoint in emoji_code.split('-'):
char_repr += chr(int(codepoint, 16))
return char_repr
# Handles realm emojis, avatars etc.
if elem.tag == "img":
return elem.get("alt", "")
if elem.tag == 'blockquote':
return '' # To avoid empty line before quote text
return elem.text or ''
def format_as_quote(quote_text: str) -> str:
quote_text_list = filter(None, quote_text.split('\n')) # Remove empty lines
quote_text = '\n'.join(map(lambda x: "> "+x, quote_text_list))
quote_text += '\n'
return quote_text
def render_olist(ol: lxml.html.HtmlElement) -> str:
items = []
counter = int(ol.get('start')) if ol.get('start') else 1
nested_levels = len(list(ol.iterancestors('ol')))
indent = ('\n' + ' ' * nested_levels) if nested_levels else ''
for li in ol:
items.append(indent + str(counter) + '. ' + process(li).strip())
counter += 1
return '\n'.join(items)
def process(elem: lxml.html.HtmlElement) -> str:
plain_text = ''
if elem.tag == 'ol':
plain_text = render_olist(elem)
else:
plain_text = get_text(elem)
sub_text = ''
for child in elem:
sub_text += process(child)
if elem.tag == 'blockquote':
sub_text = format_as_quote(sub_text)
plain_text += sub_text
plain_text += elem.tail or ""
return plain_text
if settings.PUSH_NOTIFICATION_REDACT_CONTENT:
return "***REDACTED***"
elem = lxml.html.fromstring(rendered_content)
plain_text = process(elem)
return plain_text
def truncate_content(content: str) -> Tuple[str, bool]:
# We use unicode character 'HORIZONTAL ELLIPSIS' (U+2026) instead
# of three dots as this saves two extra characters for textual
# content. This function will need to be updated to handle unicode
# combining characters and tags when we start supporting themself.
if len(content) <= 200:
return content, False
return content[:200] + "…", True
def get_base_payload(user_profile: UserProfile) -> Dict[str, Any]:
'''Common fields for all notification payloads.'''
data: Dict[str, Any] = {}
# These will let the app support logging into multiple realms and servers.
data['server'] = settings.EXTERNAL_HOST
data['realm_id'] = user_profile.realm.id
data['realm_uri'] = user_profile.realm.uri
data['user_id'] = user_profile.id
return data
def get_message_payload(user_profile: UserProfile, message: Message) -> Dict[str, Any]:
'''Common fields for `message` payloads, for all platforms.'''
data = get_base_payload(user_profile)
# `sender_id` is preferred, but some existing versions use `sender_email`.
data['sender_id'] = message.sender.id
data['sender_email'] = message.sender.email
if message.recipient.type == Recipient.STREAM:
data['recipient_type'] = "stream"
data['stream'] = get_display_recipient(message.recipient)
data['topic'] = message.topic_name()
elif message.recipient.type == Recipient.HUDDLE:
data['recipient_type'] = "private"
data['pm_users'] = huddle_users(message.recipient.id)
else: # Recipient.PERSONAL
data['recipient_type'] = "private"
return data
def get_apns_alert_title(message: Message) -> str:
"""
On an iOS notification, this is the first bolded line.
"""
if message.recipient.type == Recipient.HUDDLE:
recipients = get_display_recipient(message.recipient)
assert isinstance(recipients, list)
return ', '.join(sorted(r['full_name'] for r in recipients))
elif message.is_stream_message():
return "#%s > %s" % (get_display_recipient(message.recipient), message.topic_name(),)
# For personal PMs, we just show the sender name.
return message.sender.full_name
def get_apns_alert_subtitle(message: Message) -> str:
"""
On an iOS notification, this is the second bolded line.
"""
if message.trigger == "mentioned":
return _("%(full_name)s mentioned you:") % dict(full_name=message.sender.full_name)
elif message.trigger == "wildcard_mentioned":
return _("%(full_name)s mentioned everyone:") % dict(full_name=message.sender.full_name)
elif message.recipient.type == Recipient.PERSONAL:
return ""
# For group PMs, or regular messages to a stream, just use a colon to indicate this is the sender.
return message.sender.full_name + ":"
def get_message_payload_apns(user_profile: UserProfile, message: Message) -> Dict[str, Any]:
'''A `message` payload for iOS, via APNs.'''
zulip_data = get_message_payload(user_profile, message)
zulip_data.update({
'message_ids': [message.id],
})
content, _ = truncate_content(get_mobile_push_content(message.rendered_content))
apns_data = {
'alert': {
'title': get_apns_alert_title(message),
'subtitle': get_apns_alert_subtitle(message),
'body': content,
},
'sound': 'default',
'badge': 0, # TODO: set badge count in a better way
'custom': {'zulip': zulip_data},
}
return apns_data
def get_message_payload_gcm(
user_profile: UserProfile, message: Message,
) -> Tuple[Dict[str, Any], Dict[str, Any]]:
'''A `message` payload + options, for Android via GCM/FCM.'''
data = get_message_payload(user_profile, message)
content, truncated = truncate_content(get_mobile_push_content(message.rendered_content))
data.update({
'event': 'message',
'alert': get_gcm_alert(message),
'zulip_message_id': message.id, # message_id is reserved for CCS
'time': datetime_to_timestamp(message.date_sent),
'content': content,
'content_truncated': truncated,
'sender_full_name': message.sender.full_name,
'sender_avatar_url': absolute_avatar_url(message.sender),
})
gcm_options = {'priority': 'high'}
return data, gcm_options
def get_remove_payload_gcm(
user_profile: UserProfile, message_ids: List[int],
) -> Tuple[Dict[str, Any], Dict[str, Any]]:
'''A `remove` payload + options, for Android via GCM/FCM.'''
gcm_payload = get_base_payload(user_profile)
gcm_payload.update({
'event': 'remove',
'zulip_message_ids': ','.join(str(id) for id in message_ids),
# Older clients (all clients older than 2019-02-13) look only at
# `zulip_message_id` and ignore `zulip_message_ids`. Do our best.
'zulip_message_id': message_ids[0],
})
gcm_options = {'priority': 'normal'}
return gcm_payload, gcm_options
def handle_remove_push_notification(user_profile_id: int, message_ids: List[int]) -> None:
"""This should be called when a message that had previously had a
mobile push executed is read. This triggers a mobile push notifica
mobile app when the message is read on the server, to remove the
message from the notification.
"""
user_profile = get_user_profile_by_id(user_profile_id)
message_ids = bulk_access_messages_expect_usermessage(user_profile_id, message_ids)
gcm_payload, gcm_options = get_remove_payload_gcm(user_profile, message_ids)
if uses_notification_bouncer():
send_notifications_to_bouncer(user_profile_id,
{},
gcm_payload,
gcm_options)
else:
android_devices = list(PushDeviceToken.objects.filter(
user=user_profile, kind=PushDeviceToken.GCM))
if android_devices:
send_android_push_notification(android_devices, gcm_payload, gcm_options)
UserMessage.objects.filter(
user_profile_id=user_profile_id,
message_id__in=message_ids,
).update(
flags=F('flags').bitand(
~UserMessage.flags.active_mobile_push_notification))
@statsd_increment("push_notifications")
def handle_push_notification(user_profile_id: int, missed_message: Dict[str, Any]) -> None:
"""
missed_message is the event received by the
zerver.worker.queue_processors.PushNotificationWorker.consume function.
"""
if not push_notifications_enabled():
return
user_profile = get_user_profile_by_id(user_profile_id)
if not (receives_offline_push_notifications(user_profile) or
receives_online_notifications(user_profile)):
return
user_profile = get_user_profile_by_id(user_profile_id)
try:
(message, user_message) = access_message(user_profile, missed_message['message_id'])
except JsonableError:
if ArchivedMessage.objects.filter(id=missed_message['message_id']).exists():
# If the cause is a race with the message being deleted,
# that's normal and we have no need to log an error.
return
logging.error("Unexpected message access failure handling push notifications: %s %s" % (
user_profile.id, missed_message['message_id']))
return
if user_message is not None:
# If the user has read the message already, don't push-notify.
#
# TODO: It feels like this is already handled when things are
# put in the queue; maybe we should centralize this logic with
# the `zerver/tornado/event_queue.py` logic?
if user_message.flags.read:
return
# Otherwise, we mark the message as having an active mobile
# push notification, so that we can send revocation messages
# later.
user_message.flags.active_mobile_push_notification = True
user_message.save(update_fields=["flags"])
else:
# Users should only be getting push notifications into this
# queue for messages they haven't received if they're
# long-term idle; anything else is likely a bug.
if not user_profile.long_term_idle:
logger.error("Could not find UserMessage with message_id %s and user_id %s" % (
missed_message['message_id'], user_profile_id))
return
message.trigger = missed_message['trigger']
apns_payload = get_message_payload_apns(user_profile, message)
gcm_payload, gcm_options = get_message_payload_gcm(user_profile, message)
logger.info("Sending push notifications to mobile clients for user %s" % (user_profile_id,))
if uses_notification_bouncer():
send_notifications_to_bouncer(user_profile_id,
apns_payload,
gcm_payload,
gcm_options)
return
android_devices = list(PushDeviceToken.objects.filter(user=user_profile,
kind=PushDeviceToken.GCM))
apple_devices = list(PushDeviceToken.objects.filter(user=user_profile,
kind=PushDeviceToken.APNS))
if apple_devices:
send_apple_push_notification(user_profile.id, apple_devices,
apns_payload)
if android_devices:
send_android_push_notification(android_devices, gcm_payload, gcm_options)
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